Add missing properties in OnboardingOrganizationRequest

src/Mollie.Api/Models/Onboarding/Request/OnboardingOrganizationRequest.cs

@@ -12,5 +12,21 @@ public class OnboardingOrganizationRequest {
         /// Address of the organization.
         /// </summary>
         public AddressObject Address { get; set; }
+
+        /// <summary>
+        /// The Chamber of Commerce (or local equivalent) registration number of the organization.
+        /// </summary>
+        public string RegistrationNumber { get; set; }
+
+        /// <summary>
+        /// The VAT number of the organization, if based in the European Union or the United Kingdom.
+        /// </summary>
+        public string VatNumber { get; set; }
+
+        /// <summary>
+        /// The organization’s VAT regulation, if based in the European Union. Either shifted (VAT is shifted)
+        /// or dutch (Dutch VAT rate) is accepted.
+        /// </summary>
+        public string VatRegulation { get; set; }
     }
 }